Explosive-engine.



V D. L. DOERING.

EXPLOSIVE ENGINE.

APPLICATION FILED DEC. 16, 1902.

2 SHEJETS-SHEET'1- '13 (arbor/e15) \A G, g

Wifrmsses. [nwnor PATENTED MAY 31', 1904 I UNITED STATES- Patented May31, 1904.

PATENT. OFFICE.

3 EXPLOSIVE-ENGINEI.

SPECIFICATION forming part of Letters Patent No. 761,363, dated May 31,1904.

' Application file 'December 15, 1902. Serial No. 135,257. (No model.)

To all whom it may concern.-

- Be it known that 1, DAVID L. DOERING, a citizen of the United States,residing at Kansas City, in the county. of Jackson and State ofMissouri, have invented certain new and useful Improvements inExplosive-Engines;

and I do declare the following to be a full, clear, and exactdescriptionof the .invention, such aswill enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

My present invention relates to engines,

and has for its object to provide mechanism,

adapted to greatly reduce the, resistance in engines, whether theyareoperated by steam or other power. 1 i 7 Further objects of myinvention are to provide many improved details of structure. In thefollowing specification and accompanying drawings I have described andshown my invention as the same is when attached to rotary engines andwhen gas or gasolene is used as a motive power.' 7 In the drawings,Figure lis a side-elevation of my engine complete. Fig. 2 is a front endView of the same. Fig. 3 is a rear end view of the same. Fig. 4 is alongitudinal sectional View of the compressioncylinder. Fig. 5 is across-section through the'compression and engine cylinders. Fig. 6 is alongitudinal section through the engine-cylinder and piston. Fig. 7 is across-section through the pump-head and the compressioncylinder head,showing the connection between the two parts; and Fig, 8 is adetailsectional View showing the inclined ways at the end of the abutment.

Referring to the drawings in detail, 1 is the bed-plate, and 2designates'the standards supporting a rotary or other engine 3, whichmay be of any suitable type, but is preferably of thetype herein shownand described. Such engine is providedwith a cylindrical casing, on theinner side of which is secured an inclined abutment 4, extending betweenthe exhaust-passage 5 and the passage 6 between thevcompression-cylinder and the encarbureter.

cured against rotation with'the piston 7 by bolts 10, seated in thecasing of the engine.

The piston 7 is provided with one or more recesses 11. (One only shownin drawings, see Fig. 6.) The recess 11 isadapted to receive apiston-head or. paddle l2, maintained in pro- -jected position bycoil-spring l3, seated in the bottom of the recess 11 against shaft 8-.

Shaft 8 is provided with a central passage or duct 14, extendingtherethrough to a point immediately beneath the recess 11, into whichthe same is tapped. vAt theend of the abutment 4, near the passage 6,are a pair of inclined blocks or projections 15, spaced apart andarranged on edge and forming ways for the descent of the piston-head 12.At its outer end the shaft 8 is suitably journaled at the top of one ofthe standards 2 and is provided with a bevel-wheel 16, keyed thereto andengaging a second bevel-wheel 17 keyed to the shaft 18, journaled onstandard 19. Shaft 18 is provided at its oppositeend with asuitableeccentricv gear 20, connecting it with the piston-rod 21 of thepump 22, mounted on the top of the compression-cylinder, to behereinafter described.

The piston-rod 21 is provided at its inner end with a piston 23, whichreciprocates within the casing of the pump 22. The head 24 of the pump22 has bolted thereto on top a valve-.

housing 25, containing any suitable form of valve, (preferably aplugvalve,) and'the said housing 25 communicates with the pump-head 24through perforation 26 therein.

27 is a supply-pipe leading to any suitable (Not shown.) The pipe 27 iscoupled to the housing 25. .The valveinthe housing 25 has a stem 28pivotally connected to the link-bar 29, pivotally connected to anupright arm 30, slidably mounted on the piston-rod 21 and held normallyprojected by a spring 31 on said piston-rod 21.

32 is a collar rigidly secured to piston-rod 21 and adapted to force arm 30 inwardly in points normally out of contact.

opposition to spring 31 upon the inward stroke of the piston-rod 21. Inthe outward-projected position of the arm the valve-stem 28 is in aposition holding the valve in the housing 25 open. s

The compression-cylinder 33 has in its head an elbow-duct 34, connectingthe interior of the pump-head 24 with the interior of thecompression-cylinder or the compressionchamber 35. Closing duct 34 atits lower end is a spring-controlled valve 36, opening into the chamber35 andhaving its stem 37 extending transversely through the duct 34 andthe head of the compression-cylinder and through a suitable stufIing-box'38 exterior to the cylinder. Between the stuffing-box 38 and the outerend of the stem 37 is mounted on the said stem a spring 39, controllingValve 36.

40 is a sparker of usual structure located within chamber 35 and havingtwo contact- One of the contact-points of the sparker 40 is capable ofoscillation and passes through a suitable stuff-- ing-box on theexterior of the cylinder 33 and has at its outer end a spring-pressedarm 41. At the top of the pump-head 24 is a bellcrank 42, fulcrumed at43. Connecting the bell-crank 42 and the arm 41 of the sparker 40 is alink-bar 44. 45 is a spring controlling arm 41 and serving to maintainthe engaging arm of the bellcrank 42 in perpendicular position.

The link-bar 29 projecting beyond the point where the valve-stem 28 ispivoted thereto, upon the inward stroke of the piston-rod 21 the end 46of'the link-bar 29 depresses upon engagement the bell-crank 42, bringingthe contact-points of the sparker 40' together.

Centrally located within the compressioncylinder 33 and forward of thepassage 6 therein is a valve-seat 47, seating the valve 48, having arear concave face 49 and carried by a valve-stem 50, passing through therear end of the cylinder 33. a spring 51 thereon between the valve 48and the rear end of the cylinder 33. The stem passes through a suitablestuffing-box 52 at the end of the cylinder, and its outer end isslidably journaled in a frame 53, bolted to the -end of the cylinder 33.Between the stuffingbox 52 and the frame 53 is positioned a spiralspring 54, the tension of which may be regulated through the adjustmentof a collar 55 on the stem 50.

56 is a pump having a suitable water-supply pipe 57 tapped into the sameand also a suitable exhaust-pipe 58 connecting the same with the duct orpassage in the shaft 8. The

pump 56 is operated by eccentric gear 59, located on shaft 18 betweenbevel-wheel 17 and standard 19.

The operation of myimproved engine is as follows: Upon the outwardstroke of the piston-rod 21 the spring 31 forces the arm 30 out- Thestem 50 carries ward, opening the valve in the housing 25 and allowingthe piston 23 to draw carbureted air and gasolene or other suitablemixture through pipe 27 into pump-head 24, suction through duct 34 beingprevented by valve 36, which is normally closed. Upon the inward strokeof the piston 23 the valve in housing 25 is closed, and the mixturewhich has been drawn into the pump-head 24 is forced through duct 34,overcoming valve 36 and passing into chamber 35. At the same timesparker 40 is operated through contact of frictionwheel 46 on thelink-bar 29 with bell-crank 42, thereby exploding the charge withinchamber 35. The pressure from the exploded gases overcomes valve 48 andescapes through passage 6 into the engine-casing, striking paddle 12 andforcing same over inclined abutment 4, the spring 13 giving way andallowing the depression of the paddle 12. At the end of the abutment thepaddle 12 descends over the ways 15, which are spaced apart to permitthe pressure to find its way to the rear of the paddle, and therebyprevent the same from being forced back against the abutment, whichwould result in stopping the engine. The pump 56 supplies a continualstream of water through duct 14, which escapes through recess 11 andexhaust-port 5 and acts to keep the parts of the engine in cooledcondition.

The spring 54 may be tensioned to any strength to resist any degree ofpressure within the chamber 35. The spring 51 and the concave face ofthe valve 48 create suliicient resistance to the valve to prevent injuryto the same upon its action.

Whensteam is employed in my engine, the pump 22, the sparker 40, and thevalve controlling the pipe 27 are dispensed with, and, the pipe 27 beingconnected up to a suitable steam-boiler at one end and being connectedat its other end to the duct 34, upon the steam within the chamber 35reaching a suitable pressure valve 48 is overcome and the steam escapesinto the engine-casing, striking the piston-head or paddle 12 withresults hereinbefore described.

I do not desire to be understood as limiting myself to the employment ofa rotary engine in the use of my invention, inasmuch as the same may beattached to an ordinary reciprocating-piston engine or an engine of anyother common type. 7

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

In an attachment for engines, the combination with thecompressioncylinder having an outlet-passage intermediate its ends, anexplosive-chamber portion in front of the outlet, an air-cushion portionin the rear of the outlet, forming a continuation of and of the samewidth as the explosive-chamber and an annular valve seat between theexplosivechamber portion and the outlet reducing the diameter of therearend of the explosive-chamber, of a valve normally covering theoutlet having its front reduced and normally resting in thereducedportion of the explosive-chamher and seated upon the annular seat, andits rear face concaved and exposed to and ofa diameter approximatelyequal to the air-cushion portion of the compression cylinder, avalve-stem extending from the rear face of the IQ valve through anopening in the head of the DAVID L. DOERING.

-Witnesses:

HARRY A. KNI HT, ARCH M. EvANs.

